My friends are perfect; a true picture of what a marriage should be. They have been married for longer than I have been alive. They are understanding of each other and open to each others ideas. It appears that they truly listen to each other and try to be as giving of themselves as possible. He can't help but talk about how she is just as perfect as the first time he laid eyes on her. She also often tells of the sweet things he does to show his love for her whether it is buying flowers, a random middle of the day phone call or surprise dates. 

Perfect - until one of them was unfaithful and cheated on their spouse. What is it that would make someone who is so in love with their spouse (or at least appear on all accounts to be in love) cheat? Unfortunately it is just a reminder that marriage is hard; amazingly difficult even. Even if I were to get married to an amazing person what is there to say that another opportunity, if you will, will come along for either one of us?